Carrier film for transparent conductive films, and laminate

Abstract

A carrier film for transparent conductive films, including: a support; and a pressure-sensitive adhesive layer provided on at least one side of the support, wherein the pressure-sensitive adhesive layer has an adhesive surface with an arithmetic mean surface waviness Wa of 70 nm or less opposite to an adhesive surface in contact with the support.

1 . A carrier film for transparent conductive films, comprising:
 a support; and   a pressure-sensitive adhesive layer provided on at least one side of the support,   wherein the pressure-sensitive adhesive layer has an adhesive surface with an arithmetic mean surface waviness Wa of 70 nm or less opposite to an adhesive surface in contact with the support.   
     
     
         2 . The carrier film according to  claim 1 , wherein the pressure-sensitive adhesive layer is made from a pressure-sensitive adhesive composition containing a base polymer and a crosslinking agent. 
     
     
         3 . The carrier film according to  claim 2 , wherein the base polymer is a (meth)acrylic polymer, and the pressure-sensitive adhesive composition contains more than 10 parts by weight of the crosslinking agent based on 100 parts by weight of the (meth)acrylic polymer. 
     
     
         4 . The carrier film according to  claim 2 , wherein the base polymer is a (meth)acrylic polymer obtained by polymerization of a monomer component containing a (meth)acrylic ester having an alkyl group of 2 to 14 carbon atoms and a functional group-containing monomer. 
     
     
         5 . The carrier film according to  claim 4 , wherein a molar ratio of a functional group of the crosslinking agent to a functional group of the functional group-containing monomer is 0.70 or more. 
     
     
         6 . The carrier film according to  claim 4 , wherein the (meth)acrylic ester includes butyl (meth)acrylate. 
     
     
         7 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 1 ,   the transparent conductive film comprises a support and a transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the support opposite to a surface of the support in contact with the transparent conductive layer.   
     
     
         8 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 1 ,   the transparent conductive film comprises a support, a transparent conductive layer, and a functional layer provided on a surface of the support opposite to a surface of the support in contact with the transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the functional layer opposite to a surface of the functional layer in contact with the support.   
     
     
         9 . The laminate according to  claim 8 , which has a ratio of Wa after bonding to Wa before bonding of 0.5 to 3.0, wherein Wa after bonding represents the arithmetic mean surface waviness of a surface of the functional layer of the transparent conductive film after the surface is brought into contact with and bonded to the adhesive surface of the pressure-sensitive adhesive layer of the carrier film, and Wa before bonding represents the arithmetic mean surface waviness of the surface of the functional layer of the transparent conductive film before the surface is brought into contact with and bonded to the adhesive surface of the pressure-sensitive adhesive layer of the carrier film. 
     
     
         10 . The carrier film according to  claim 3 , wherein the base polymer is a (meth)acrylic polymer obtained by polymerization of a monomer component containing a (meth)acrylic ester having an alkyl group of 2 to 14 carbon atoms and a functional group-containing monomer. 
     
     
         11 . The carrier film according to  claim 5 , wherein the (meth)acrylic ester includes butyl (meth)acrylate. 
     
     
         12 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 2 ,   the transparent conductive film comprises a support and a transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the support opposite to a surface of the support in contact with the transparent conductive layer.   
     
     
         13 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 3 ,   the transparent conductive film comprises a support and a transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the support opposite to a surface of the support in contact with the transparent conductive layer.   
     
     
         14 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 4 ,   the transparent conductive film comprises a support and a transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the support opposite to a surface of the support in contact with the transparent conductive layer.   
     
     
         15 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 5 ,   the transparent conductive film comprises a support and a transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the support opposite to a surface of the support in contact with the transparent conductive layer.   
     
     
         16 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 6 ,   the transparent conductive film comprises a support and a transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the support opposite to a surface of the support in contact with the transparent conductive layer.   
     
     
         17 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 2 ,   the transparent conductive film comprises a support, a transparent conductive layer, and a functional layer provided on a surface of the support opposite to a surface of the support in contact with the transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the functional layer opposite to a surface of the functional layer in contact with the support.   
     
     
         18 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 3 ,   the transparent conductive film comprises a support, a transparent conductive layer, and a functional layer provided on a surface of the support opposite to a surface of the support in contact with the transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the functional layer opposite to a surface of the functional layer in contact with the support.   
     
     
         19 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 4 ,   the transparent conductive film comprises a support, a transparent conductive layer, and a functional layer provided on a surface of the support opposite to a surface of the support in contact with the transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the functional layer opposite to a surface of the functional layer in contact with the support.   
     
     
         20 . A laminate, comprising:
 a carrier film for transparent conductive films; and   a transparent conductive film placed on the carrier film,   wherein   the carrier film is a carrier film according to  claim 5 ,   the transparent conductive film comprises a support, a transparent conductive layer, and a functional layer provided on a surface of the support opposite to a surface of the support in contact with the transparent conductive layer, and   an adhesive surface of the pressure-sensitive adhesive layer of the carrier film is bonded to a surface of the functional layer opposite to a surface of the functional layer in contact with the support.